Good: Currently, running Q6600 437x8 prime stable on bios 602. Will run 437x9 also, but needs too much vcore for air. 2x2GB G-Skill DDR2-1000PQ @ 524.
Bad: Q9550 430x8 and 430x9 is prime stable (4+ hours) but I get lockups and reboots out of the blue even with RAM at 1:1. Tried bios 605 and 702, neither fixed the issues. 602 gives me a "unknown CPU type" message.